Safety switch mechanism



March 9,1926.` 1,576,036

f c. B. coATEs SAFETY SWITCH MEGHANISMl Filed May 20, 1924 A; 1 TTURNE K Beitk n10 'inni' of, Miecontrolling devioe, ith'as "gheengfound toloe Vpossible andin faiot'to happenin'operv riticn that the, operator would- Ninove .the :controlling jdevioe ust' far enolighvto permit thef'thrbwlng fof 'the reversing switch while the'frnainl'switeh bar still reniainedfgin; kthe 'dlifjpoisition, thus burning out thefmotor` or`Causingotherserions'd erlnifige,y Y

(Among he Yolofjeets. of the invention" tre to pinpifod-not on d a re'clntion of costs;

1 {The' vent" nrnprsn binndlynlnkfnr the reversing-Switch' Controlled "entirely 'by the plnngerlr bnlfnf themnn yswitch and-not llovthe',littefrfs oitfrolling lever. More pfertinltrly 'it {eolnpres' ai Stp" pin fantomatil In einer to 'iuii'sjtrte' lthe invention, pne

piiitimniea enigen. serial No. 7144,554.;

proximity t0 eminent .devisffndl general. nO

gnoconiinnyng drnwng'syin which:

the inain switch in 'the 011 position;

Y, I 1,576,036 .i

ig-2 kS.atvertical*sectional lellvizon* the linen- Q of Figli lfShOWing the InninlSWitCh mittenti??position; A I i I f Fig. 4 is'a horizontalv sectional viewj'fol- *i Figl v 5 is/'ttl perspectivey viewv ofithej locking ,ineohanismj 'with assooia'tec'l' partsfjoffthe switch shown' in brokenoutline.

,Th embodiment ofkthefinvention ohosen -Yfor fthe purpose of' illustration -is shown in its n dnptntinn nin nwell -knnvn type. @f liink ngi swith inef'ohani'sni wherein lthl main largedenicl' This renlarged end Bfllpiises thev double poles C ofthe niainjswitclig'vyhioh y,has spfeoedjatehing slots Gr 'sind Gwhioh tactmember D carried by? thellinslating i block E' which forms` a transversely proj eeting head `for-lthe', reoiproeatory member or bei" F whiohifextenls into hous'ii'ig" A.. f Bar Cooperatel witlricedstops HnndH, in hous-v ingv A", reciprootory movement `lof rloer Vbeing effected` byizuspring I'vvvhiehA is pivoliedk at one end to/theloar and at itsopposite'end .near the topf ofthejp'ivotecleontrollingfinem# its pivot 'spring' I tenclsftodraw'the berF in the: direction of this rocking -nnovement,

fwhich tendencyjannot beome eieetive until f .bnexof the projecting jforvfof'fne;nigger f, feontaots'thebar to force the 'latter down# pfw'rdly and 'ont of ltchngngagnmnntwith one of the` stops H v or HQ since fthe tendency in a-,lntehecl'eonditionffThe nseof st loading spring Kior insuringfquickretilrirof the trigger ;TtQ/thke' of position is optional." 4 ssooieteil with j they :IngunA switch is" alre- 7. In combination, a inainswitch -having vi afieciprocatory:zineinbei', a reversing switch associated with n said l:main switch, a movable stop..,forrlockingthe' reversing switch, means V.

main switchfand having a control lever vpivoted -for swinging movement across saidk housing, a 'spring pressed'stop pin mounted in said housing forlockingsaid reversing ffor moving'said stop into 'locking position,

` I member;V for ,counteractiiig'said first-namedy and .means controlled vby said recipiofcator',1

means. n ,A u 8. In combination, a main Aswitch "having a reciprocat'ory fmembeig'a `reversing switch.'

'n associated witlisaidl main switch, ajinov` able stop for-flocking the'jreversing switcl'i, Y means for moving said'stop into lockingpo`Y sition,1and'a2pivoted .member engagedsbyr said'y reciprocatory member for counteracting ,said first-named' means. g' 9. The Comb nation ofa main switch and o a reveijsingswitch, :a spring-pressed stopV fpin or'lo'cking thereversing switch, andv means operated by the main switch'when in moving said 'pin toV thev off position for inoperative position.

" 10. Infconibi'nati n, a main switch having a reciprocatory member-.Y provided with va lateral projection, a reversing switch adja- Vrcentsaid'main switch,` a movable stop for.

locking saidfreversing switch, and means .Y v.engagedl'by:the projectionon said reciprocatoiy-inember for moving lsaidV stop.V to ini n Y "'.11"Iv1 1f'. o ,n bination, .agliousing a'maiii switch thereinfhaving a reciprocatory mein- J p operativey position. f i Y bei', arefversi'ngfswitch associated-with said v12. VIn combination', la" housing,f a main switch therein havingl a reciprocatory meniber, a reversing switch .associated with said main switch 1 and having? a control levei` ivoted for .swinging-.movement .across said iousing, a stoppin movably mounted in saidV @housing andarr'anged, to v.project into the n path ofmovement of said reversing lever to lock the same :against movement,I and means controlledby said reciprocatoryfmember lfor aid 'n pin Yin inoperative positionk 2wlienthe'inainswitchisoii"; 13 lnficombinatin, I aj A housing, -a main Vinning switclitherein havinga reciprocatory memg ber, vka reversing switch"associatedfwith said,

main switch. -andV having a controlleve'r pivotedor swingingmovement across said fhOuSing," a spring pressed stop Vpin mounted in said housing for locking said reversing f 'lever against movement, anda lever engaged ,by said reciprocatorymember when the :main switch ,is offwfor holding said n. pin in inoperativeposition. .A v

v*145.11111 combination, "a housing, ak mainl switch-therein having -a reciprocatory mem- 6a! ber,va reversing switch :associated with said saidreciprocatory member and lever against movement, said pinpl'ojecti-iigfl) within saidhousing adjacent saidreciprocatory member and-means engaged by said meniberfor moving' said'pin to release said lever. Y N f n "i 15. In combination, a housing, a main switch therein having a `reciprocatoi'y'meni- Vber, a reversing switch yassociated rwith said main-switch andi having a control lever pivoted for swinging movementfacross said housing, a Spring pressed stoppin mounted.,

in saidphousing` for,` locking 'saidjreversiig leverk against movement, rkand bell-crank pivoted withinsaid housing and arranged to engage said pin, said kbell-crank being engaged by saidniember in the oiiwposition of said main switch to `move said pin to inoperative position.

. 16. In.coinbination,- ahousing, "a kmain switch therein having-a reciprocatory member, .a reversing switch associatedwith said main switch and vhaving 'a control lever piv-otedffor `swinging movement across said housing, aspring pressed stop pin vmounted in said .housing for locking said reversing lever againsty movement, .said pin 'having `a liead'extendingwithin saidI housing' above saidrreciprocatory member, a bell crank coni-v Vprising an inverted U-sliaped ,member strad-i dling 'said lreciprocatory member f and pivoted ,at itsylower end tosaid housing, said bell crank receiving the steinof said pin to be engaged by said reciproeatory member when the main switch is oi`f'to move said 17. In combination, va housing, a main pin to inoperativeposition.

switch therein having la reciprocatorymemb er provided with 'a transverse pro]ect1on, a

abovesaid head 'through a slotand arranged i reversingswitch '.on vsaid housing having a control lever pivoted for-swinging move-l mentacross the latter, a springpressed stop pin'mounted inv said housing anjdfno'rmallyl disposed in the path of movementy of said `reversing lever,l said pin havinga head extending within saidhousing above said recip-k rocatory member, a bell crank comprising an. inverted u'U-shaped. Amember straddling ivoted at the lower ends of its parallel si es to said f housing, the rounded elongate upper end of said b'ellfcrank having kat one extremity ya slot receiving the stem ofl said pin above said head and at its other extremity a roller for engagement with said projection on said reciprocatory member whereby said bell crank is rocked to bear upon said pin head.

to retract said pin to inoperative position.

Signed by me at Cleveland, Ohio, this dayof May 1924.` i

CHARLES B. coATEs. 

